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| author |   Guo Ren <guoren@linux.alibaba.com> | 2020-12-30 10:06:22 +0000 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2021-01-12 09:52:41 +0800 |
| commit | e26db7ad9c319496bcbe6043d9d4e1d1da3ec613 (patch) | |
| tree | 9151d4e1da9a6041d174edfaec3b63cfce06962d /arch/csky | |
| parent | csky: Sync riscv mm/fault.c for easy maintenance (diff) | |
| download | linux-dev-e26db7ad9c319496bcbe6043d9d4e1d1da3ec613.tar.xz linux-dev-e26db7ad9c319496bcbe6043d9d4e1d1da3ec613.zip | |
csky: mm: abort uaccess retries upon fatal signal
Pick up the patch from the 'Link' made by Mark Rutland. Keep the
same with x86, arm, arm64, arc, sh, power.
Link: https://lore.kernel.org/linux-arm-kernel/1499782763-31418-1-git-send-email-mark.rutland@arm.com/
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Diffstat (limited to 'arch/csky')
| -rw-r--r-- | arch/csky/mm/fault.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c index c7b67976bac4..1482de56f4f7 100644 --- a/arch/csky/mm/fault.c +++ b/arch/csky/mm/fault.c @@ -279,8 +279,11 @@ good_area: * signal first. We do not need to release the mmap_lock because it * would already be released in __lock_page_or_retry in mm/filemap.c. */ - if (fault_signal_pending(fault, regs)) + if (fault_signal_pending(fault, regs)) { + if (!user_mode(regs)) + no_context(regs, addr); return; + } if (unlikely((fault & VM_FAULT_RETRY) && (flags & FAULT_FLAG_ALLOW_RETRY))) { flags |= FAULT_FLAG_TRIED; |